Abstract: An engine assembly and a method of control thereof is provided. The engine assembly comprises: an exhaust gas aftertreatment device having an inlet for receiving exhaust gases leaving an engine; a heater for selectively heating gases at or upstream of the exhaust gas aftertreatment device; an air moving device for driving a flow of gases into the inlet of the exhaust gas aftertreatment device when the engine is in a non-running condition; and a controller configured to, prior to the engine being started: operate the heater to heat gases at or upstream of the inlet; and operate the air moving device to drive a flow of gases into the inlet to thereby heat the exhaust gas treatment device.

Abstract: Methods and systems are provided for a bore. In one example, a system includes a bore portion for receiving a reciprocating piston, the bore portion having first and second ends between which the piston travels in an axial direction. The bore portion comprises a plurality of recesses, axially spaced apart, and formed in a piston facing surface of the bore portion at a plurality of axial positions, with at least one recess being provided at each axial position. Widths of the plurality of recesses decrease in the axial direction away from a mid-stroke position toward the first and second ends, and depths of the plurality of recesses increase in the axial direction away from the mid-stroke position toward the first and second ends.

Abstract: An engine assembly and a method of control thereof is provided. The engine assembly comprises: an exhaust gas aftertreatment device having an inlet for receiving exhaust gases leaving an engine; a heater for selectively heating gases at or upstream of the exhaust gas aftertreatment device; an air moving device for driving a flow of gases into the inlet of the exhaust gas aftertreatment device when the engine is in a non-running condition; and a controller configured to, prior to the engine being started: operate the heater to heat gases at or upstream of the inlet; and operate the air moving device to drive a flow of gases into the inlet to thereby heat the exhaust gas treatment device.

Abstract: Methods and systems are provided for a bore. In one example, a system includes a bore portion for receiving a reciprocating piston, the bore portion having first and second ends between which the piston travels in an axial direction. The bore portion comprises a plurality of recesses, axially spaced apart, and formed in a piston facing surface of the bore portion at a plurality of axial positions, with at least one recess being provided at each axial position. Widths of the plurality of recesses decrease in the axial direction away from a mid-stroke position toward the first and second ends, and depths of the plurality of recesses increase in the axial direction away from the mid-stroke position toward the first and second ends.

Abstract: An engine assembly for a motor vehicle is provided. The assembly comprises a bearing housing portion configured to support a bearing for a crankshaft of the engine assembly, wherein the bearing housing portion comprises a bearing interface surface configured to interface with the bearing and an end face adjacent to the bearing interface surface, the end face being arranged so as to face a web of the crankshaft when installed. The engine assembly further comprises an insulation layer provided on the end face, the insulation layer being positioned such that the insulation layer is between the bearing housing portion and the web of the crankshaft when the crankshaft is installed in the engine assembly.

Abstract: A crankcase oil catcher, the crankcase oil catcher comprising one or more surfaces configured to catch dispersed oil in a crankcase and direct the oil along the surfaces of the crankcase oil catcher away from a crankcase casing wall and towards a crank sump.

Abstract: A crankcase assembly for an engine comprising: a crankcase comprising a crank sump; the crank sump comprising primary and secondary sump volumes; one or more crankcase oil catchers, the crankcase oil catchers comprising surfaces to catch dispersed oil in the crankcase and direct the oil away from a crankcase casing wall and towards the crank sump, wherein the crankcase oil catchers are provided above a crankshaft and below a piston of the engine; and one or more guides to collect oil and guide the oil to the primary sump volume. At least a portion of the guide is movable between a first configuration in which the guide collects the captured oil that would otherwise have.

Abstract: An engine assembly for a motor vehicle is provided. The assembly comprises a bearing housing portion configured to support a bearing for a crankshaft of the engine assembly, wherein the bearing housing portion comprises a bearing interface surface configured to interface with the bearing and an end face adjacent to the bearing interface surface, the end face being arranged so as to face a web of the crankshaft when installed. The engine assembly further comprises an insulation layer provided on the end face, the insulation layer being positioned such that the insulation layer is between the bearing housing portion and the web of the crankshaft when the crankshaft is installed in the engine assembly.

Abstract: A crankcase assembly for an engine is provided. The crankcase assembly includes a crankcase comprising a crank sump, the crank sump including a primary sump volume and a secondary sump volume, one or more crankcase oil catchers, the crankcase oil catchers comprising one or more surfaces configured to catch dispersed oil in the crankcase and direct the oil along the surfaces of the crankcase oil catcher away from a crankcase casing wall and towards the crank sump, wherein the crankcase oil catchers are provided above a crankshaft and below an associated piston of the engine, and one or more guides configured to collect oil captured by the crankcase oil catchers and guide the oil to the primary sump volume.

Abstract: A crankcase assembly for an engine comprising: a crankcase comprising a crank sump; the crank sump comprising primary and secondary sump volumes; one or more crankcase oil catchers, the crankcase oil catchers comprising surfaces to catch dispersed oil in the crankcase and direct the oil away from a crankcase casing wall and towards the crank sump, wherein the crankcase oil catchers are provided above a crankshaft and below a piston of the engine; and one or more guides to collect oil and guide the oil to the primary sump volume. At least a portion of the guide is movable between a first configuration in which the guide collects the captured oil that would otherwise have.

Abstract: A crankcase oil catcher, the crankcase oil catcher comprising one or more surfaces configured to catch dispersed oil in a crankcase and direct the oil along the surfaces of the crankcase oil catcher away from a crankcase casing wall and towards a crank sump.

Abstract: An engine block has one or more bores configured for receiving one or more respective pistons; one or more coolant passages; and one or more lubricant passages. At least portions of the coolant passages and lubricant passages are disposed adjacent to and about the bores so as to cool the bores. The coolant passage portion extends over a first lengthwise portion of the bores and the lubricant passage portion extending over a second lengthwise portion of the bores. The first and second lengthwise portions are longitudinally spaced apart along the bores.

Abstract: A crankcase oil catcher configured for placement above a crankshaft and below a piston is described. In one particular example, the crankcase oil catcher has a contour that catches dispersed oil within the crankcase while directing the oil away from a casing wall and towards a crank sump along the contoured surface of the crankcase oil catcher. Inclusion of an aperture within the surface allows for passage of a connecting rod of the crankshaft while providing for a protruding lip around the perimeter of the aperture that prevents oil on the top surface from falling through the aperture.

Abstract: A crankcase assembly for an engine is provided. The crankcase assembly includes a crankcase comprising a crank sump, the crank sump including a primary sump volume and a secondary sump volume, one or more crankcase oil catchers, the crankcase oil catchers comprising one or more surfaces configured to catch dispersed oil in the crankcase and direct the oil along the surfaces of the crankcase oil catcher away from a crankcase casing wall and towards the crank sump, wherein the crankcase oil catchers are provided above a crankshaft and below an associated piston of the engine, and one or more guides configured to collect oil captured by the crankcase oil catchers and guide the oil to the primary sump volume.

Abstract: A bearing block assembly in an engine is provided. The bearing block assembly includes at least one bearing block to rotatably support an oil lubricated shaft and fastening apparatus to attach the at least one bearing block to a flat mounting surface on a large engine component and a thermal barrier positioned between the shaft and the flat mounting surface configured to reduce the loss of heat to the large engine component from oil used to lubricate the shaft.

Abstract: An engine block has one or more bores configured for receiving one or more respective pistons; one or more coolant passages; and one or more lubricant passages. At least portions of the coolant passages and lubricant passages are disposed adjacent to and about the bores so as to cool the bores. The coolant passage portion extends over a first lengthwise portion of the bores and the lubricant passage portion extending over a second lengthwise portion of the bores. The first and second lengthwise portions are longitudinally spaced apart along the bores.

Abstract: A crankcase oil catcher configured for placement above a crankshaft and below a piston is described. In one particular example, the crankcase oil catcher has a contour that catches dispersed oil within the crankcase while directing the oil away from a casing wall and towards a crank sump along the contoured surface of the crankcase oil catcher. Inclusion of an aperture within the surface allows for passage of a connecting rod of the crankshaft while providing for a protruding lip around the perimeter of the aperture that prevents oil on the top surface from falling through the aperture.

Abstract: An apparatus for heating a fluid such as engine oil includes an auxiliary pump, a conduit connected to the auxiliary pump and provides fluid communication from the auxiliary pump and an aperture in the conduit. In use the auxiliary pump contains the fluid. A first portion of the fluid is pumped into the conduit by the auxiliary pump and a second portion of the fluid remains in the auxiliary pump. The aperture restricts the flow of the first portion of the fluid in the conduit. The second portion of the fluid is heated due to friction between the second portion of the fluid and the pump. There is also described a method of heating a fluid.

Abstract: An engine system is disclosed in which the transfer of heat from pressurized oil flowing through an integrally formed oil transfer passage of the engine is reduced by providing a thermal barrier between the oil and the engine. In one example the thermal barrier is provided by the use of a thick walled plastic tube and in other embodiments ribs are used to separate an oil flow passage from the engine.

Abstract: A bearing block assembly in an engine is provided. The bearing block assembly includes at least one bearing block to rotatably support an oil lubricated shaft and fastening apparatus to attach the at least one bearing block to a flat mounting surface on a large engine component and a thermal barrier positioned between the shaft and the flat mounting surface configured to reduce the loss of heat to the large engine component from oil used to lubricate the shaft.